Display screen for an air purifier



FIGS. 1-9 are top perspective views of a display screen for an airpurifier as an inner circular element changes its shape;

FIGS. 10-18 are left perspective views of FIGS. 1-9;

FIGS. 19-27 are front views of FIGS. 1-9;

FIGS. 28-36 are right perspective views of FIGS. 1-9; and,

FIGS. 37-45 are bottom perspective views of FIGS. 1-9.

The broken lines showing various elements of the display screen for anair purifier are included for the purpose of illustrating non-claimedsubject matter and form no part of the claimed design.

CLAIM The ornamental design for a display screen for an air purifier, asshown and described.